following the l'aquila quake in 2009, it was reinforced to make it more quake-resistant. the gray paint and crosses at the top show where steel bars were put in to support the walls. the building is damaged but still standing. the second building is across the street-- this elementary school, which was supposed to have been reinforced, too, but almost completely collapsed. had the quake struck during the school day instead of 3:00 in the morning, more than 200 children of amatrice could have been at risk. italian authorities are investigating why it and so many other buildings were not more quake-resistant. certain buildings fell down that perhaps shouldn't have, such as the school. what kind of assurances will people have that this kind of thing won't happen again if they come back? >> ( translated ): unlike the u.s., italy's history goes back more than 1,000 years. but it's not so much a question of age; it's about how much money is available. if you study things for a moment, there's a substantial difference between improvement and conforming to code. conforming to cod